2001 TOYOTA SEQUOIA Service Repair Manual

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Page 1737 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual I27699
Body ECU Wire Harness View:
B7
DCTY
± DIAGNOSTICSPOWER SEAT CONTROL SYSTEM (w/ Driving Position
Memory)DI±1535
1729 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check harness and connector (Bo

Page 1738 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DIDEX±01
DI±1536
± DIAGNOSTICSCRUISE CONTROL SYSTEM
1730 Author: Date:
2005 SEQUOIA (RM1146U)
CRUISE CONTROL SYSTEM
PRECAUTION
NOTICE:
When disconnecting the battery terminal, initialize the fo

Page 1739 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DI26R±41
Customer Problem Analysis
Check and Clear DTC
Vehicle Brought to Workshop
Problem Symptom ConfirmationSymptom Simulation Symptom does not occur
DTC CheckNormal system code
DTC Chart
Problem

Page 1740 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DI26S±26
CRUISE CONTROL SYSTEM Check Sheet
Inspector s name:
Customer s Name
Date Vehicle
Odometer Reading / /
Condition of
Problem Occurrence
Date Problem
Frequency
Occu

Page 1741 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DIDEY±01
I24838
(1)
(3)
I24838
(4)
(1)
(3)
I24838
(1)
(3)
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±1539
1733 Author: Date:
2005 SEQUOIA (RM1146U)
ROAD TEST
1. PROBLEM SYMPTOM CONFIRMATION
(a) Insp

Page 1742 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual I24838
(4)(1)
(3)
I24838
(5)
(1)
(3)
DI±1540
± DIAGNOSTICSCRUISE CONTROL SYSTEM
1734 Author: Date:
2005 SEQUOIA (RM1146U)
(d) Inspect the CANCEL function.
(1) Push the ON±OFF button on.
(2) Dri

Page 1743 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DI26X±44
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±1541
1735 Author: Date:
2005 SEQUOIA (RM1146U)
PROBLEM SYMPTOMS TABLE
If a normal system code is displayed during the DTC check but the problem st

DI26X±44
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±1541
1735 Author: Date:
2005 SEQUOIA (RM1146U)
PROBLEM SYMPTOMS TABLE
If a normal system code is displayed during the DTC check but the problem still occurs, check the circuits
for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting
page.
HINT:
Inspect the ºFuseº and ºRelayº before confirming the suspected areas shown in the table below.
Inspect each suspected area in numerical order, in relation to the corresponding symptom.
If the malfunction still exists after checking and confirming that all the circuits are normal, replace the ECM.
SymptomSuspected AreaSee page
Main switch cannot be turned ON.
(Cruise indicator light in combination meter does not come on.)
1. Cruise control switch circuit
2. CRUISE main indicator light circuit
3. Combination meter system
4. ECMDI±1561
DI±1557
DI±1608
IN±35
Vehicle speed setting cannot be done.
(Although indicator light in combination meter comes on when
main switch is turned ON, it goes off when vehicle speed is set.)1. Cruise control switch circuit
2. ECMDI±1561
IN±35
Setting cannot be done.
(Indicator light in combination meter comes on when main switch
is turned ON and it remains ON while setting.)
1. Cruise control switch circuit
2. Vehicle speed sensor circuit (DTC P0500)
3. Stop light switch circuit (DTC P0571)
4. Park/neutral position switch circuit (DTC P0705)
5. O/D main switch circuit
6. Combination meter system
7. ECMDI±1561
DI±278
DI±1552
DI±576
DI±688
DI±1610
IN±35
While vehicle is driven with cruise control, set control is cancelled.
(Indicator light and CRUISE remain ON.)
1. Cruise control switch circuit
2. Vehicle speed sensor circuit (DTC P0500)
3. Stop light switch circuit (DTC P0571)
4. CRUISE main indicator light circuit
5. Park/neutral position switch circuit (DTC P0705)
6. Combination meter system
7. ECMDI±1561
DI±278
DI±1552
DI±1557
DI±576
DI±1608
IN±35
Hunting
(Speed is not constant.)1. Vehicle speed sensor circuit (DTC P0500)
2. ECMDI±278
IN±35
Setting cannot be cancelled.
(When coast, acceleration, resume, or set speed change function
is operated with control switch.)1. Cruise control switch circuit
2. ECMDI±1561
IN±35
DTC is not output, or is output when it should not be.1. Diagnosis circuitDI±1567
CRUISE main indicator light does not come on.
1. Cruise control switch circuit
2. CRUISE main indicator light circuit
3. Combination meter system
4. ECMDI±1561
DI±1557
DI±1610
IN±35

Page 1744 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DI3CH±22
I28458
E8E7 E6 E5 E4
DI±1542
± DIAGNOSTICSCRUISE CONTROL SYSTEM
1736 Author: Date:
2005 SEQUOIA (RM1146U)
TERMINALS OF ECM
Symbols (Terminals No.)Wiring ColorTerminal DescriptionCondit

DI3CH±22
I28458
E8E7 E6 E5 E4
DI±1542
± DIAGNOSTICSCRUISE CONTROL SYSTEM
1736 Author: Date:
2005 SEQUOIA (RM1146U)
TERMINALS OF ECM
Symbols (Terminals No.)Wiring ColorTerminal DescriptionConditionSpecified Condition
TC (E4±23) ± E1 (E6±1)P±B ± BRDTC output signalIgnition switch on10 to 14 V
TC (E4±23) ± E1 (E6±1)P±B ± BRDTC output signalIgnition switch on, connect terminals
TC and CG of DLC3Below 1 V
ST1± (E4±16) ± E1 (E6±1)L±B ± BRCruise cancel input signalIgnition switch on, depress brake
pedalBelow 1 V
ST1± (E4±16) ± E1 (E6±1)L±B ± BRCruise cancel input signalIgnition switch on, release brake
pedal10 to 14 V
STP (E4±15) ± E1 (E6±1)G±Y ± BRStop light switch input sig-
nalIgnition switch on, depress brake
pedal10 to 14 V
STP (E4±15) ± E1 (E6±1)G±Y ± BRStop light switch input sig-
nalIgnition switch on, release brake
pedalBelow 1 V
CCS (E5±2) ± E1 (E6±1)R±Y ± BRCruise control main
switch input circuitIgnition switch on10 to 14 V
CCS (E5±2) ± E1 (E6±1)R±Y ± BRCruise control main
switch input circuitIgnition switch on, CANCEL switch
held ON6.6 to 10.1 V
CCS (E5±2) ± E1 (E6±1)R±Y ± BRCruise control main
switch input circuitIgnition switch on, +/RES switch
held ON4.5 to 7.1 V
CCS (E5±2) ± E1 (E6±1)R±Y ± BRCruise control main
switch input circuitIgnition switch on, ±/SET switch
held ON2.3 to 4.0 V
CCS (E5±2) ± E1 (E6±1)R±Y ± BRCruise control main
switch input circuitIgnition switch on, MAIN switch held
ONBelow 1 V
SPD (E5±8) ±E1 (E6±1)G±O ± BRSpeed signalIgnition switch on, rotate driving
wheel slowlyPulse generation
(see page DI±278)
D (E5±21) ±E1 (E6±1)W±R ± BRD shift position switch in-
put signalIgnition switch on, shift lever D posi-
tion10 to 14 V
D (E5±21) ±E1 (E6±1)W±R ± BRD shift position switch in-
put signalIgnition switch on, shift lever any
position except DBelow 1 V
PI (E5±18) ±E1 (E6±1)LG±R ± BRCruise indication signalIgnition switch on, MAIN switch
OFF10 to 14 V
PI (E5±18) ±E1 (E6±1)LG±R ± BRCruise indication signalIgnition switch on, MAIN switch onBelow 1 V

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